Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161734Ab3DEMDT (ORCPT ); Fri, 5 Apr 2013 08:03:19 -0400 Received: from mga11.intel.com ([192.55.52.93]:64472 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161568Ab3DEL6Z (ORCPT ); Fri, 5 Apr 2013 07:58:25 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,414,1363158000"; d="scan'208";a="317363701" From: "Kirill A. Shutemov" To: Andrea Arcangeli , Andrew Morton Cc: Al Viro , Hugh Dickins , Wu Fengguang , Jan Kara , Mel Gorman , linux-mm@kvack.org, Andi Kleen , Matthew Wilcox , "Kirill A. Shutemov" , Hillf Danton , Dave Hansen , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv3, RFC 26/34] mm: add huge_fault() callback to vm_operations_struct Date: Fri, 5 Apr 2013 14:59:50 +0300 Message-Id: <1365163198-29726-27-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1365163198-29726-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1365163198-29726-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1144 Lines: 30 From: "Kirill A. Shutemov" huge_fault() should try to setup huge page for the pgoff, if possbile. VM_FAULT_OOM return code means we need to fallback to small pages. Signed-off-by: Kirill A. Shutemov --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 09530c7..d978de8 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -195,6 +195,7 @@ struct vm_operations_struct { void (*open)(struct vm_area_struct * area); void (*close)(struct vm_area_struct * area); int (*fault)(struct vm_area_struct *vma, struct vm_fault *vmf); + int (*huge_fault)(struct vm_area_struct *vma, struct vm_fault *vmf); /* notification that a previously read-only page is about to become * writable, if an error is returned it will cause a SIGBUS */ -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/